Histomorphology of oviduct in adult Rajasri fowl

Abstract

The present study was conducted on thirty-six (36) apparently healthy laying Rajasri fowls and elucidates the histological variations of different oviductal regions, namely the infundibulum, magnum, isthmus, uterus, and vagina. The mucosal folds varied significantly in length, measuring 419.62±94.28 µm in the infundibulum, 2268.87±424.22 µm in the magnum, 1468.32±58.51 µm in the isthmus, 2235.11±121.31 µm in the uterus, and 1265.85±152.36 µm in the vagina. The epithelial height ranged from 17.96±4.48 µm in the infundibulum to 28.87±8.86 µm in the magnum. The tunica muscularis showed regional thickness variations 208.7±28.62 µm in the infundibulum, 196.09±62.38 µm in the magnum, 171.24±32.42 µm in the isthmus, 310.46±26.18 µm in the uterus, and 418.56±36.15 µm in the vagina. The mucosa was lined by simple or pseudostratified ciliated columnar epithelium with goblet cells, and tubular glands were confined to the uterus. These findings highlight distinct regional histomorphological adaptations reflecting functional specialization of the oviduct in avian reproduction.